9000029310
Level:
B
Find the solution set of the following inequality.
\[
(x + 2)(x^{2} + 4x + 3) > x^{2} + 5x + 6
\]
\((-3;-2)\cup (0;\infty )\)
\((-\infty ;-3)\cup (3;\infty )\)
\((-\infty ;-1)\cup (1;\infty )\)
\((-1;1)\)
\(\mathbb{R}\)
Higher degree equations and inequalities
9000031001
Level:
B
Find the sum of all real roots of the following equation.
\[
(3x - 1)(2x + 1)(4x^{2} + 3x - 1) = 0
\]
\(-\frac{11}
{12}\)
\(- \frac{1}
{12}\)
\(-\frac{1}
{6}\)
\(\frac{1}
{6}\)
9000031004
Level:
B
Assuming \(y\in \mathbb{R}\),
find the number of the solutions of the following algebraic equation.
\[
y^{4} + 5y^{2} + 6 = 0
\]
\(0\)
\(4\)
\(3\)
\(2\)
9000031005
Level:
B
Assuming \(x\in \mathbb{R}\),
solve the following algebraic equation.
\[
(x + 1)^{4} - 5(x + 1)^{2} + 4 = 0
\]
\( \{ - 3;-2;0;1\}\)
\( \{1;4\}\)
\( \{ - 2;-1;1;2\}\)
\( \{ - 1;3\}\)
9000031006
Level:
C
The following equation has a double solution
\(x = 1\). Find
all solutions.
\[
x^{4} + 2x^{3} - 3x^{2} - 4x + 4 = 0
\]
\(K = \{ - 2;1\}\)
\(K = \{ - 2;1;2\}\)
\(K = \{ - 2;0;1\}\)
another answer
9000031007
Level:
C
Find the sum of the solutions of the following equation.
\[
x^{3} + 2x^{2} - x - 2 = 0
\]
\(- 2\)
\(3\)
\(- 3\)
\(- 1\)
9000028306
Level:
A
Find the sum of all real solutions of the following equation.
\[
\left (3 - x\right )\left (x^{2} - 4\right ) = 0
\]
\(3\)
\(0\)
\(2\)
\(5\)
9000028302
Level:
B
The following equation has a solution
\(x = 1\). Find
the sum of the remaining real solutions.
\[
x^{3} + 2x^{2} - x - 2 = 0
\]
\(- 3\)
\(- 1\)
\(0\)
\(2\)
9000028303
Level:
B
The following equation has a solution
\(x = -2\). Find
the sum of the remaining real solutions.
\[
x^{3} + 3x^{2} - 18x - 40 = 0
\]
\(- 1\)
\(1\)
\(0\)
\(4\)
9000028304
Level:
C
The following equation has solutions
\(x_1= 1\) and
\(x_2 = 3\). Find
the sum of the remaining real solutions.
\[
x^{4} - 12x^{3} + 47x^{2} - 72x + 36 = 0
\]
\(8\)
\(- 1\)
\(3\)
\(5\)